ES2695548T3 - Scaffolding bar and stacking arrangement of at least two scaffold bars - Google Patents

Abstract

Metal scaffold bar with an elongated round tube support profile shaped like a steel bar (21) and an elongated U-shaped reinforcement profile (22) made of sheet steel, with the following characteristics: the tube support profile round (21) extends in the direction of a first longitudinal axis (23) in a first longitudinal direction (24), has, observed in the first longitudinal direction (24), a support profile length (26) and a longitudinal center profile support (27), has an outer diameter (28) essentially constant in its length support profile (26), has a support edge (31), upper observed in a mounting position (30) of the scaffold bar (20), for supporting and / or hooking a scaffold platform (39) or several scaffold platforms (39) and comprises two ends of support profile (25.1, 25.2) that point in two directions opposite in the first longitudinal direction (24) in the opposite direction to each other ; or at each end of the support profile (25.1, 25.2) of the ends of the support profile (25.1, 25.2) a separate metal connection head (32) is fixedly welded in each case for the detachable fixing of the scaffolding bar (20) in the mounting position (30) on a fixing element (34), provided with at least one step (33.1, 33.2), with a scaffolding element (36) by means of a connecting wedge (35) which can be inserted through the passage (33.1, 33.2) or at each end of the support profile of the support profile ends is fixedly welded in each case an open metal hook-shaped hook claw downwards, observed in each case in the mounting position, for positioning and / or the removable hook of the scaffolding bar in the mounting position on and / or on scaffolding components; the U-shaped reinforcement profile (22) extends away from the round tube support profile (21), in the mounting position (30), down from the round tube support profile (21), extends in the direction of a second longitudinal axis (43) in a second longitudinal direction (44) parallel to the round tube support profile (21) and / or parallel to its first longitudinal axis (23) bridging the longitudinal profile support center (27) to along the round tube support profile (21) continuously in a reinforcing profile length (45) that at least corresponds to half the support profile length (26) of the round tube support profile (21), has two ends of the reinforcing profile (47.1, 47.2) that point in two opposite directions in the second longitudinal direction (44) in the opposite direction to each other, has a U-shaped cross section (48) observed in a cross section running perpendicularly The second longitudinal axis (43) is designed with a base profile (49) that extends in the second longitudinal direction (44), from which two lateral profile arms (50.1, 50.2) extend that extend in the second longitudinal direction (44) in the same direction, observed in the mounting position (30) upwards, in a transverse distance (52) essentially parallel to each other in the direction of a vertical profile arm axis (51) in mounting position (30) and have fixing ends (55.1, 55.2) that are fixedly welded to an outer wall of the round tube support profile (21) and have a width of reinforcement profile (52) corresponding to the transverse distance (52) and a reinforcing profile height (56) corresponding to the distance (56) between the fixing ends (55.1, 55.2) and the base profile (49) that is greater than the profile width of reinforcement (52) and that is greater than the outer diameter (28) of the round tube support profile (21); characterized by the following characteristics: a first profile arm (50.1) of the two lateral profile arms (50.1, 50.2) is provided with a first step (60.1) for fixing and / or securing of scaffolding components; the first passage (60.1) is arranged at a first longitudinal distance (61.1) from a first end of the reinforcing profile (47.1) from the two ends of the reinforcing profile (47.1, 47.2) of the U-reinforcing profile (22) and a second longitudinal distance of a second end of the reinforcing profile (47.2) from the two ends of the reinforcing profile (47.1, 47.2) of the U-reinforcing profile (22), presents, observed in the second longitudinal direction (44), a first pitch length (64) and it has a first pitch height (63) that is less than the height of the reinforcement profile (56); a second profile arm (50.2) of the two lateral profile arms (50.1, 50.2) is provided with a second step (60.2) for fixing and / or securing scaffolding components; the second step (60.2)

Description

DESCRIPTION

Scaffolding bar and stacking arrangement of at least two scaffolding bars

The invention relates to a metal scaffold bar with an elongated steel rod-shaped round tube support profile, preferably essentially straight and a U-shaped reinforcement profile made of elongated steel plate, preferably essentially straight, and also refers to a stacking arrangement of at least two such scaffold bars.

Scaffolding bars of this type are known, for example, from US-PS 4671 382, in particular figures 8 and 9. This document discloses all the features of the preamble of claim 1. These scaffold bars comprise a round tube that It is enlarged in each one of the ends of the tube pointing in the opposite direction to each other to be converted into a slotted connection head which is manufactured in one piece from the tube. The corresponding connection head can be coupled by means of its coupling slot on a perforated disc of a scaffold stalk and can be removably fixed there with the help of a connecting cradle. In the round tube, a channel profile with a U-shape which is closed in all its extension on its longitudinal sides is fixed in such a way that the profile arms of the channel profile extend parallel to each other and move away from a base profile of the channel. Channel profile are fixedly welded to the outer perimeter wall of the round tube. The U-shaped channel profile has a channel profile width corresponding to the transverse distance of the two profile arms which is greater than the outer diameter of the round tube.

Similar scaffolding rods are also known from the practice and the product prospectus of the applicant «Catalog and price list» relating to the scaffolding system "Layher AllroundGerust-System", edition of 01-03 2007, in the form of the bar of scaffolding shown in that document on page 8 and designated as "O-bar, reinforced". This scaffold bar comprises a round tube and a reinforcement profile welded therewith in a fixed manner having a triangular cross section. Accordingly, the reinforcement profile can be designated as a V-shaped reinforcement profile. The round tube support profile and the V-reinforcement profile are composed of a steel material having an elastic limit of approximately 320 N / mm2.

Although the aforementioned scaffolding bars of the applicant have proved their effectiveness in practice in the best way, it has become clear that these scaffolding bars in certain cases of application, for example, in large spans, do not meet the requirements set in these cases of a greater resistance to flexion or load capacity. Due to this, the applicant has developed and offered the so-called "double O-bars", which are also represented in the product leaflet mentioned above on page 8. Also these "double O-bars" have proven their effectiveness in practice. They have a profile-O-upper edge in the form of a round steel tube whose ends pointing in the opposite direction to each other is fixedly welded in each case a connection head and have a lower profile-O-edge that reinforces and it protrudes downwards from the profile-O-upper flange, also in the form of a round steel tube. The use of the two said round tubes results in the abbreviated designation "bar O double". The lower O-flange profile is fixedly welded with the ends of its two round tube portions bent upwards in the round tube of the upper flange. The round tube of the lower flange is joined by means of several perforated steel support plates, arranged at a distance from each other in the longitudinal direction of this scaffold bar, providing in each case a vertical distance, with the round tube of the upper flange. The round tube of the upper flange, the round tube of the lower flange and the support plates are also composed of a steel material having an elastic limit of approximately 320 N / mm2. A "double O-bar" of this type certainly has a greater resistance to bending or load capacity than the "reinforced bars" previously mentioned, but a significantly higher overall height. This causes that, in a correct assembly of a "double O-bar" in a scaffold in which the connection heads of the "double O-bar" are fixed in perforated discs, arranged horizontally adjacent, essentially, at the same height , of two scaffold stems arranged or mounted horizontally adjacent to the scaffold base height of a next floor, the height of passage through the lower O-flange profile which slopes relatively steeply downwards is correspondingly reduced. This can cause obstacles for the passage of people walking on the platform or platforms of scaffolding of a lower floor. In addition to these disadvantages, such "O-double rods" are relatively expensive and have a relatively large weight.

Among other reasons for this, the applicant has promoted improvements in the form of scaffolding rods of the type mentioned at the beginning that have been disclosed in the German patent application No. 102014 100498.1, not yet published on the priority date of this right of protection. , as well as in the international parallel application No. PCT / DE2014 / 100433, also not yet published on the priority date of this right of protection, in each particular case in figures 9 and 10, as well as in the corresponding descriptive parts . In the outer peripheral wall of the round tube that forms the support profile of this scaffold bar, is fixedly welded a U-shaped reinforcement that presents on its longitudinal sides a U-shaped cross section closed all the way with ends of fixation bent in each case inwardly or in each case outwardly from their arms of profile U which extend essentially parallel to each other. The two profile arms U are beveled or bent in each case of a base profile of the U-shaped reinforcement profile by 90 degrees and extend in each case perpendicularly away from the base profile. In the embodiment examples described in said documents, the outer diameter of the round tube support profile is 48.3 mm and the two U-profile arms of this U-shaped reinforcement profile have a transverse distance between each other which corresponds to the width of the U-shaped reinforcement profile, which is 34 mm.

In the aforesaid scaffold rods of the type mentioned at the outset, it is not possible or only possible in a limited manner to fix existing accessory components with couplings in the corresponding round tube support profile in a longitudinal zone of the corresponding tube support profile round, in which the corresponding U-shaped reinforcement profile is also extended, or an anti-lifting device for at least one scaffold platform present, supported or hooked on or on the round tube support profile by means of a securing bar arranged on the underside of the or of the corresponding scaffold platform, pivotable relatively to this about a transversely pivoting axis, in particular perpendicularly, to the working surface of the scaffold platform. Furthermore, in a lateral stacking of several of these scaffold rods one above the other or next to one another, a relatively large stacking space is required.

Therefore, it is the object of the invention to provide a scaffolding rod of the type mentioned at the beginning which, with a manufacturing possibility that remains simple and relatively economical, as well as a more simple and safe manual manipulation, with a total height that remains relatively small and relatively light weight, has a relatively high bending strength or load capacity and offers favorable possibilities for a fixation and / or securing of scaffold components on the scaffold bar and also for a space-saving transport or for space-saving storage of several scaffolding bars of this type.

This object is solved surprisingly simply by the features of claim 1.

Correspondingly, the invention relates to a metal scaffold bar with a round tube support profile preferably substantially straight, elongated, bar-shaped, preferably composed exclusively of a particularly essentially round round tube, and a profile of U-shaped reinforcement of elongated steel sheet, preferably straight, in particular in the form of a bar, the round tube support profile extending in the direction of a first longitudinal axis in a first longitudinal direction, having, observed in the first longitudinal direction, a length of support profile and a longitudinal center of profile support, having a constant outside diameter in its length of support profile, having a supporting edge, superior observed in a mounting position of the scaffolding bar, for support and / or hooking of a scaffold platform or several scaffolding platforms, and comprising two ends of the support profile that apunt an in opposite directions in the first longitudinal direction in opposite direction to each other; and in each case a connection head separated from metal, in particular from malleable cast iron, gray cast iron or steel, for the removable fastening of the cable, is fixedly welded or at each end of the support profile of the supporting profile ends. scaffolding bar in the mounting position in a fastening element, provided with at least one passage, of a scaffolding element by means of a connection cradle insertable through the passage, or being fixedly welded at each profile end of support of the ends of the support profile in each case a claw hook in the form of a hook, open downwardly observed in each case in the mounting position, of metal, for the support and / or removable coupling of the scaffolding bar in the mounting position on and / or in scaffolding components, and extending the U-shaped reinforcement profile away from the round tube support profile, in the mounting position below the round tube support profile and in direction of a second longitudinal axis in a second longitudinal direction, preferably in straight line, parallel to the profile of round tube support and / or parallel to its first longitudinal axis, bridging the longitudinal center of profile support along the support profile of round tube in a continuous manner in a reinforcement profile length that at least corresponds to half the length of the support profile of the round tube support profile, having two reinforcing profile ends pointing in opposite and opposite directions one of the other, presenting a U-shaped cross section observed in a cross section running perpendicular to the second longitudinal axis, being designed with a base profile extending in the second longitudinal direction, extending from the two side profile arms that extend in the second longitudinal direction in the same direction, observed in the position of mounting upwards, at a transverse distance essentially parallel to each other in the direction of a profile arm axis, vertical in the mounting position, and having fastening ends that are fixedly welded to an outer wall of the support profile of round tube, and having a width of reinforcing profile corresponding to the transverse distance and a height of reinforcing profile corresponding to a distance between the fastening ends and the base profile which is greater than the width of reinforcing profile and which is larger than the outer diameter of the round tube support profile, and a first profile arm of the two side profile arms of a first step for securing and / or securing scaffold components is provided, which is arranged at a first longitudinal distance of a first end of reinforcing profile of the two ends of reinforcing profile of the U-shaped reinforcement profile and a second distance length a second reinforcing profile end of the two reinforcing profile ends of the U-shaped reinforcement profile, having, observed in the second longitudinal direction, a first pitch length and a first pitch height that is less than the height of reinforcing profile, and a second profile arm of the two side profile arms of a second step for fixing and / or securing scaffold components being provided at a third longitudinal distance of the first end of reinforcement profile. of the U-shaped reinforcing profile preferably corresponding essentially to the first longitudinal distance and disposed at a fourth longitudinal distance from the second profile end of the reinforcement, preferably essentially corresponding to the second longitudinal distance, having, observed in the second longitudinal direction, a second passage length and preferably corresponding essentially to the first passage length of the first passage, and presenting a second step height which is smaller than the reinforcement profile height, preferably and which essentially corresponds to the first step height of the first step, and the transverse distance being, which corresponds to the width of the reinforcement profile of the second step. U-reinforcement profile of the two lateral profile arms which essentially extend parallel to each other by less than 0.6 of the outer diameter of the round tube support profile.

According to a particularly preferred design, it can be provided that the transverse distance corresponding to the reinforcing profile width of the U-shaped reinforcement profile of the two lateral profile arms extending essentially parallel to each other is less than 0, 5 or 0.45 of the outer diameter of the round tube support profile. The outer diameter of the round tube support profile can preferably be from about 47 mm to 49 mm, in particular about 48.3 mm. The reinforcing profile width or the transverse distance may preferably be from about 15 mm to 25 mm, in particular about 20 mm. In this way, a transport that in particular saves space or storage saving space in particular from several such scaffold bars is possible.

According to an advantageous development, it can be provided that the first passage of the first profile arm and the second passage of the second profile arm are arranged in relation to the U-shaped reinforcement profile at a substantially equal height. This enables a particularly advantageous attachment of accessory elements with couplings, a coupling part of the corresponding couplings being inserted both through the first passage of the first profile arm and also of the second passage of the second profile arm of the U-shaped profile.

According to a very particularly advantageous development, it can be provided that the first passage of the first profile arm and the second passage of the second profile arm of the U-shaped reinforcement profile are limited by the outer wall of the round tube support profile. Thus, in a particularly advantageous manner, accessory elements can be fixed with couplings in the round tube support profile in a longitudinal area of the round tube support profile, in which this is provided with the U-shaped reinforcement profile, with at least a coupling element, in particular a coupling element for assembling.

According to a preferred development, it can be provided that the first step of the first profile arm, observed in a visual direction perpendicular to a plane containing the first longitudinal axis and the second longitudinal axis, or is overlapped with the second step of the second profile arm of the U-shaped profile at least partially or more than half of its pitch surface, or essentially aligns with the second step. In this way, another improvement can be obtained in the sense of the advantages mentioned above.

According to an advantageous design, provision can be made for the first profile arm of the U-shaped profile to have, in the area of the first step, a first profile arm height which is greater than half the height of the reinforcing profile and that the second profile arm of the U-shaped reinforcement profile present in the area of the second passage a second profile arm height that is greater than half the height of the reinforcement profile and / or that the first height of the first passage The step of the first profile arm and the second step height of the second passage of the second profile arm is smaller in each case than half the height of the reinforcement profile. In this way, on the one hand, the resistance to bending or load capacity of the scaffold bar can be increased and, on the other hand, it can be realized or ensured, from the point of view of a favorable manual manipulation of the scaffolding bar and / or from the point of view of fixing accessory elements with couplings or securing against lifting of scaffolding platforms that must be ensured so that they do not rise from the scaffold bar, a sufficiently large step height of the steps.

Preferably, the first pitch height and the second pitch height are in each case at least 19 mm or at least 25 mm or approximately 30 mm.

According to a particularly preferred embodiment, it can be provided that the first profile arm height of the first profile arm of the U-shaped reinforcement profile is greater than 1.0 or 1.2 or 1.4 of the first step height of the first step of the first profile arm and / or the second profile arm height of the second profile arm of the U-shaped profile is greater than 1.0 or 1.2 or 1.4 of the second step height of the second step of the second profile arm. In this way, further improvement can be obtained in the sense of the advantages mentioned above.

Preferably, the second profile arm height of the second profile arm corresponds essentially to the height of the first profile arm of the first profile arm.

According to a very particularly preferred design, it can be provided that the first profile arm of the U-shaped reinforcement profile is provided with at least one third step for the fixation and / or securing of scaffolding components which, observed in the second direction longitudinal, this disposed at a first longitudinal distance of passage of the first step, preferably at an essentially equal height, and that is arranged at a fifth longitudinal distance of the first end of reinforcing profile, preferably that corresponds essentially with the second longitudinal distance, and this arranged at a sixth longitudinal distance of the second reinforcing profile end, preferably corresponding essentially with the first longitudinal distance and which, observed in the second longitudinal direction, presents a third pitch length and a third step height that is smaller than the height of the reinforcement profile, preferably and which essentially corresponds to the first pitch of the first step, and the second profile arm of the U-shaped reinforcement profile being provided. less than a fourth step for the fixation and / or securing of scaffolding components, which, observed in the second longitudinal direction, is disposed at a second longitudinal distance of passage, corresponding preferably essentially to the first longitudinal distance of passage, second step, preferably at a height essentially equal to that of the second step, and at a seventh longitudinal distance from the first end of reinforcing profile of the U-shaped reinforcement profile, preferably corresponding substantially to the fifth longitudinal distance, and which is arranged at an eighth longitudinal distance from the second reinforcing profile end of the U-shaped reinforcement profile, preferably which essentially corresponds to the sixth longitudinal distance, and which, observed in the second longitudinal direction, has a fourth step length and a fourth step height which is smaller than the reinforcement profile height, preferably and correspondingly in essence with the third step height of the third step. In this way, several fixing possibilities for accessory elements with couplings and / or for scaffold platforms which must be secured against lifting, with a total weight simultaneously simultaneously minimized in the longitudinal direction along the round tube support profile are created. Scaffolding bar and with a resistance to bending or load capacity of the scaffold bar even large.

Preferably, the first step and / or the second step and / or the third step or each step, observed in the second longitudinal direction, may or may be configured elongated or elongated and / or rectangularly designed. In this way, variable or different fastening and / or securing positions for scaffolding components that must be fixed and / or secured or fixed and / can be implemented in the longitudinal direction along the round tube support profile within the corresponding passage. or insured on the scaffold bar, in particular on its round tube support profile. In addition, in this way the total weight of the scaffold bar can be reduced with a resistance to bending or load capacity of the scaffold bar still large.

According to a preferred embodiment, it can be provided that the two lateral profile arms, essentially extending parallel to each other, of the U-shaped reinforcement profile are arranged symmetrically to a longitudinal plane of symmetry containing the first axis. longitudinal and the second longitudinal axis. According to a preferred variant embodiment, it can be provided that the U-shaped reinforcement profile is symmetrically configured to a longitudinal plane of symmetry containing the first longitudinal axis and the second longitudinal axis. These measures enable additional flexural strength or load capacity of the improved scaffold bar and also enable improved storage or stacking conditions, in particular of two such scaffold rods.

According to an advantageous further development, it can be provided that the U-shaped reinforcement profile is produced by beveling, bending and / or profiling on a roller path of a steel sheet in the form of a plate or strip and / or that the profile The base of the U-shaped profile is bent outwardly away from the round tube support profile, ie convexly, preferably forming an inner radius and / or outer radius and, observed in a transverse section perpendicular to the second longitudinal axis, present a semicircular cross section. These measures enable a particularly simple and economical manufacture, as well as an advantageous resistance to bending or load capacity of the scaffold bar.

The invention also relates to a stacking arrangement of at least two scaffold bars comprising a first scaffold bar according to the invention and at least one second scaffold bar according to the invention, supporting the tube support profile round of the second scaffold bar in or on a profile arm of the two essentially profiled profile arms of the U-shaped reinforcement profile of the first scaffold bar, and the U-shaped reinforcement profile of the second scaffold bar being supported. scaffolding with a profile arm of its two profile arms essentially parallel to or on the round tube support profile of the first scaffold bar, preferably in such a way that the profile arm axis of the reinforcement profile in U of the second scaffold bar and the profile arm axis of the U-shaped reinforcement profile of the first scaffold bar run approximately parallel. Such a stacking arrangement saves space in particular and enables a storage that in particular saves space by stacking at least two scaffold bars according to the invention adjacent to one another or to one another. In a lateral stacking of several scaffold rods according to the invention, an advantageous positioning assurance is obtained due to a reduced danger of a sliding or sliding of the scaffold bars superimposed relatively to each other. This implies a corresponding advantage in comparison with bars. of scaffolding whose reinforcing profile has a triangular cross-section V, as in the "O-bar, reinforced" mentioned at the beginning.

Particularly advantageous is whether the scaffold rods or the first scaffold bar and the second scaffold bar are substantially identical in design. This enables advantageous stacking and space conditions.

In this respect, according to a particularly advantageous embodiment, it can be provided that the profile arm axis of the first scaffold bar and the profile arm axis of the second scaffold bar have a stacking distance between each other. that is 0.5 of the sum of the outside diameter and the width of reinforcement profile or transverse distance. This enables additionally improved stacking and space conditions.

According to a preferred design, it can be provided that the round tube support profile and / or the U-shaped reinforcement profile is composed or composed of a high-strength steel material. Preferably, the round tube support profile and / or the U-shaped reinforcement profile is composed or composed of a high-strength steel material and / or the round tube support profile and / or the U-shaped reinforcement profile. or they are made of a high strength steel material. The use of such high strength steel material enables a significantly improved flexural strength or load capacity of the scaffolding bar manufactured therefrom.

The corresponding connection head can preferably be designed with an upper head part in the mounting position and a lower head part in the mounting position between which a slot open towards the front, preferably also towards the sides, can be configured for the horizontal insertion of the connection head on the scaffold element fixing element provided with a step or several steps, and designed, for example, as a fixing flange. The corresponding connection head can have at least one cradle opening, preferably two cradle openings for the insertion or transfer of the connection cradle. If the connecting head is configured with an upper head part and a lower head part and a groove configured therebetween, both the upper head part and the lower head part can each have at least one cradle opening for the head. transfer of the connection cradle. The connection head can be formed with vertical side surfaces in the mounting position. The groove can also be designed preferably open towards the lateral surfaces. The side surfaces may enclose a cradle angle preferably from 40 to 50 degrees, in particular from approximately 44 degrees or approximately 45 degrees or approximately 46 degrees. The side surfaces may be formed by developing forward towards a center, preferably a stem center and / or disk of a perforated disk fixed on the scaffold element, eg, stem, and / or in a direction towards a central axis of the shaft. scaffold element, preferably scaffold tube, particularly in the direction of a stem axis of a scaffold stalk. The connection cradle can preferably be fixed in a captive manner in the connection head, preferably with the aid of a securing element, for example a rivet, which prevents its separation, in particular extraction, from the connection head.

However, it is understood that the corresponding connection head can also be configured in another way. For example, the connection head may be provided with an insertion shoulder that extends transversely, preferably approximately perpendicularly to the first longitudinal axis of the round tube support profile and, in the mounting position, downwards, in particular downwards from the outer wall or outer diameter of the round tube support profile. By means of this insertion heel, the connecting head can be or be detachably fixed in the vertical direction or in the direction of a pitch axis of the at least one passage of the fixing element in the fixing element of the scaffolding element. Expressed in other words, such a connection head can be or be removably fixed to the fixing element having the at least one passage in such a way that its insertion heel can be or be inserted in a vertical direction through the passage of the fixing element. This, in contrast to the aforementioned embodiment of a scaffold bar, in which the corresponding connection head has a slot open towards the front and the horizontal in the mounting position which requires or makes possible a horizontal insertion in the fastening element and which, therefore, it is inserted or inserted horizontally into the fastening element, for example, the perforated disk. The fastening element can preferably be a rosette, in particular a perforated disc, of a scaffold element, preferably of a scaffold tube, in particular a scaffold stalk, having at least one passage, preferably several steps disposed displaced to each other in tangential direction, preferably in equal perimeter angles, in particular 45 degrees.

It is understood that the above characteristics and measures can be combined discretionally in the context of the embodiment of the invention.

Other advantages, features and points of view of the invention can be taken from the following descriptive part in which an example of a preferred embodiment is described with the help of the figures.

They show:

Figure 1 a three-dimensional representation of a scaffold bar mounted in a mounting position on the perforated discs of two scaffold stems of a scaffold and mounted scaffold platforms;

Figure 2 a side view of the scaffold bar, the latter being represented, for the illustration of its mounting position and its assembly on the two scaffold stems, with their discs perforated with discontinuous lines;

Figure 3 the scaffold bar in a top view from above;

FIG. 4 shows a greatly enlarged cross section of the scaffold bar along the cutting edges 4 4 in FIGS. 2 and 3, without showing the connection head;

Figure 5 a possible stacking arrangement of two scaffold rods.

The metal scaffold bar 20 comprises, as essential elements, an elongated, rod-shaped tube support profile 21, preferably made of galvanized steel, and an elongated U-shaped reinforcement profile 22 made of steel plate, preferably galvanized.

The round tube support profile 21 is composed of an essentially straight round tube, essentially cylindrical-circular. The round tube support profile 21 extends in the direction of a first longitudinal axis 23 in a first longitudinal direction 24 and has two supporting profile ends 25.1, 25.2 pointing in opposite directions to each other in the first longitudinal direction. The round tube support profile 21 has, observed in the first longitudinal direction 24, a length of support profile 26 and a longitudinal profile support center 27, as well as an outer diameter 28 essentially constant in its length of support profile 26. The round tube support profile 21 has an essentially constant support wall thickness 29 over its entire length of support profile 26 or essentially over its entire support profile. The round tube support profile 21 has an upper support edge 31, observed in a mounting position 30 of the scaffold bar 20, for the support and / or engagement of a scaffold platform 39 or several scaffold platforms 39. At each end of the support profile 25.1, 25.2 of the ends of the support profile 25.1, 25.2, a separate connecting head 32 of metal, in particular of malleable cast iron, gray cast iron, steel casting or steel, is fixedly welded in each case. steel, for the removable attachment of the scaffold bar 20 in the mounting position 30 to a fastening element 34, provided with at least one passage 33.1, 33.2, of a scaffolding element 36 by means of a connection cradle 35 which it can be entered through the at least one step 33.1, 33.2.

As illustrated in FIGS. 1 to 3, the scaffold bar 20 can be fixed by means of its two connection heads 32, 32 in a manner known per se with the aid in each case of a connection cradle 35 in a perforated disc 34 in FIG. Each case of a scaffold stalk 36. As also shown in these figures, on or on the scaffold bar 20, several scaffold platforms 39 can be fixed in a manner known per se in the first longitudinal direction 24, in a manner known per se. example, by means of the hooks or hooks of attachment 37 shown.

The U-shaped reinforcement profile 22 extends in the direction of a second longitudinal axis 43 in a second longitudinal direction 44 parallel to the round tube support profile 21 or parallel to its first longitudinal axis 23, bridging the longitudinal center of the profile support 27 along the round tube support profile 21 continuously over a length of reinforcement profile 45 which at least corresponds to half the length of support profile 26 of the round tube support profile 21. In the example of embodiment shown, the length of support profile 26 is about 940 mm and the length of reinforcement profile 45 is about 720 mm. The reinforcement profile in U 22 is arranged centrally centered with respect to the round tube support profile 21, observed in the first longitudinal direction 24. Accordingly, the round tube support profile 21 extends with its respective profile end of support 25.1, 25.2, observed in the first longitudinal direction 24, beyond the corresponding end of reinforcement profile 47.1,47.2 of the reinforcement profile in U 22. In the embodiment shown, the corresponding end of support profile 25.1, 25.2 of the round tube support profile 21 has in each case a distance 46 with respect to the corresponding reinforcing profile end 47.1, 47.2, associated in each case, of the U-reinforcing profile 22, observed in the first longitudinal direction 24. Preferably , this distance 46 is approximately 110.0 mm. However, it is understood that the distance may also be smaller or greater. The U-shaped reinforcement profile 22 is a straight profile with respect to the second longitudinal direction 44. The U-shaped reinforcement profile 22 has two reinforcing profile ends 47.1, 47.2 in opposite directions and in the opposite direction between each other. The U-shaped reinforcement profile 22 extends away from the round tube support profile 21, in the mounting position 30 downwards from the round tube support profile 21. The U-shaped reinforcement profile 22 has a cross section 48 shaped of U observed in a transverse section running perpendicular to the second longitudinal axis 43 (see in particular figure 4). The U-reinforcement profile 22 comprises a base profile 49 that extends straight in the second longitudinal direction 44 and two side profile arms 50.1, 50.2. The profile arms 50.1, 50.2 extend from the base profile 49 in the same direction, upwardly observed in the mounting position, essentially parallel to each other in the direction of a vertical profile arm axis 51 in the mounting position. at a transverse distance 52 between each other. The base profile 49 is bulged away from the round tube support profile 21 outwards, ie convexly, forming an inner radius 53 or with an inner radius 53. The inner radius 53 is, for example, 7 mm. Observed in a cross section perpendicular to the second longitudinal axis 44, the base profile 49 has a semicircular cross section 54. The two lateral profile arms 50.1, 50.2 extend in the second longitudinal direction 44 substantially parallel to each other. A first profile arm 50.1 of the two profile arms 50.1, 50.2 has a first fixing end 55.1 that moves away from the base profile 49. A second profile arm 50.2 of the two profile arms 50.1, 50.2 presents a second end of fixing 55.2 moving away from the base profile 49. The first fixing end 55.1 of the first profile arm 50.1 presents a first distance 56 from the base profile 49 and the second fixing end 55.2 of the second profile arm 50.2 presents a second distance from the base profile 49 which is equal to the first distance 56. Each profile arm 50.1, 50.2 of the two profile arms 50.1, 50.2 is fixedly welded with its fastening end 55.1, 55.2 which moves away from the base profile 49 on the cylindrical-circular outer wall 38 of the round tube support profile 21. The outer wall 38 can also be designated as an exterior perimeter wall. The two profile arms 50.1, 50.2 extend, observed in a cross section perpendicular to the second longitudinal axis 43, at a transverse distance 52 parallel to each other. The U-reinforcement profile 22 has a reinforcing profile width at U 52 corresponding to the transverse distance 52 and a reinforcing profile height 56 corresponding to the distance 56 between the fastening ends 55.1. 55.2 and the base profile 49. The reinforcement profile height 56 is greater than the reinforcement profile width 52 and is also larger than the outer diameter 28 of the round tube support profile 21.

The transverse distance 52 of the two lateral profile arms 50.1, 50.2 extending essentially parallel to each other or the reinforcing profile width 52 of the U-reinforcement profile 22 is or is less than 0.6 of the outer diameter 28. of the round tube support profile 21. In the embodiment shown, the transverse distance 52 or the reinforcing profile width at U 52 is approximately 20.0 mm. The outer diameter 28 of the round tube support profile 21 is approximately 48.3 mm. Accordingly, in the embodiment shown the quotient or ratio of the transverse distance 52 or the width of the reinforcement profile at U 52 and the outer diameter 28 of the round tube support profile 21 is approximately 0.41. The wall thickness of the round tube support profile 29 is in this case approximately 2.7 mm. The wall thickness 57 of the profile arms 50.1, 50.2 of the U-shaped reinforcement profile 22 is in this case approximately 3.0 mm.

The first profile arm 50.1 of the two lateral profile arms 50.1, 50.2 is provided with two elongated, rectangular steps 60.1, 60.2, each extending in the second longitudinal direction 44 for fixing and / or securing components of the same. Scaffolding not shown in the figures. A first step 60.1 of the two steps 60.1, 60.2 is disposed at a first longitudinal distance 61.1 of the first reinforcing profile end 47.1 of the U-shaped reinforcement profile 22 and a second longitudinal distance of the second reinforcing profile end 47.2 of the two U-shaped reinforcement profile ends 47.1, 47.2 of the U-shaped reinforcement profile 22. The other step 60.3, also designated as the third step, of the two steps 60.1, 60.3 of the first profile arm 50.1, is disposed at a fifth longitudinal distance of the first reinforcing profile end 47.1 which essentially corresponds to the second longitudinal distance and is disposed at a sixth longitudinal distance 61.6 of the second reinforcing profile end 47.2 which essentially corresponds to the first longitudinal distance 61.1. The first step 60.1 and the other or third step 60.3 are arranged at a first longitudinal distance of passage 62.1 between themselves at an essentially equal height and are limited, seen in the first longitudinal direction 24, by the straight outer wall 38 of the profile of round tube support 21, in the mounting position 30 upwards.

Also the second profile arm 50.2 of the two lateral profile arms 50.1, 50.2 is provided with two elongated, rectangular steps 60.2, which extend in each case in the second longitudinal direction 44 for fixing and / or securing scaffolding components not shown in the figures or of said scaffold components. One of the steps of these two steps, which is also designated as the second step 60.2, is arranged at a third longitudinal distance from the first reinforcing profile end 47.1 of the U-shaped reinforcement profile 22 corresponding essentially to the first distance longitudinal 61.1 and is disposed at a fourth longitudinal distance from the second reinforcing profile end 47.2, which essentially corresponds to the second longitudinal distance. The other step of these two steps 60.2, which is also designated as the fourth step, is disposed at a seventh longitudinal distance of the first reinforcing profile end 47.1 of the U-shaped reinforcement profile 22 which essentially corresponds to the fifth or second one. longitudinal distance. In addition, the fourth step is disposed at an eighth longitudinal distance from the second end of the reinforcement profile at U 47.2 of the reinforcement profile at U 22, which essentially corresponds to the sixth or first longitudinal distance. The one or the second step 60.2 and the other or fourth step are arranged at a second longitudinal distance of passage between themselves at the same height and are limited, observed in the first longitudinal direction 24, by the straight outer wall 38 of the support profile of round tube 21, in the mounting position 30 upwards. The second longitudinal distance of passage is essentially the same as the first longitudinal distance of passage 62.1. The first longitudinal distance of passage 62.1 and second longitudinal distance of passage are in this case in each case approximately 34 mm. The first third, sixth and eighth longitudinal distances are in this case in each case approximately 80 mm. The second, fourth, fifth and seventh longitudinal distances are in this case in each case approximately 377 mm.

Each of the four steps 60.1, 60.2, 60.3 presents, observed in a direction perpendicular to the second longitudinal direction 44, an essentially equal pitch 63 and, observed in the second longitudinal direction 44, a substantially equal pitch length 64. The respective passage length 64 is in this case approximately 263 mm. However, it is understood that each step, particularly in the case of longer scaffold rods, may also have another pitch length, for example, of about 158 mm or about 286 mm or about 478 mm. It is further understood that each profile arm may also present more than two steps, in particular, from three to eight steps. If each profile arm contains more than two steps, the steps that are located closer to the respective reinforcement profile ends preferably have a pitch length that corresponds in each case to the step length 64, that is, which is of approximately 263 mm.

Each of the four steps 60.1, 60.2, 60.3 presents a cross section of step in the essential of equal size. The step height 63 of each step 60.1, 60.2, 60.3 is less than the height of the reinforcing profile 56. Observed in a visual direction perpendicular to a plane 65 containing the first longitudinal axis 23 and the second longitudinal axis 43, are aligned both the first step 60.1 of the first profile arm 50.1 and the second step 60.2 of the second profile arm 50.2 as the third step 60.3 of the first profile arm 50.1 and the fourth step of the second profile arm 50.2 in each case are essentially or are arranged by couples in essentials coinciding. Each of the steps 60.1, 60.2, 60.3, observed in a visual direction perpendicular to the plane containing the first longitudinal axis 23 and the second longitudinal axis 43 or plane of longitudinal symmetry 65, is limited or surrounded in its entirety by parts of wall of the corresponding profile arm 50.1, 50.2 of the U-shaped reinforcement profile 22 and by a wall part of the outer wall 38 of the round tube support profile 21.

The two profile arms 50.1, 50.2 of the U-shaped reinforcement profile 22 each have in the region of their passages 60.1, 60.3; 60.2 a substantially equal profile arm height 66 that is greater than half the height of reinforcement profile 56. Accordingly, the corresponding pitch height 63 of steps 60.1, 60.3; 60.2 of the two profile arms 50.1, 50.2 of the U-reinforcement profile 22 is smaller in each case than half of the height of the reinforcement profile 56. The pitch heights 63 of the steps 60.1, 60.3; 60.2 are essentially the same. In the embodiment shown, the corresponding pitch height 63 is approximately 30.0 mm. The profile arm height 66 that the profile arms 50.1, 50.2 of the U-shaped reinforcement profile 22 present in each case in the region of steps 60.1, 60.3; 60.2, is in this case approximately 43.0 mm. The reinforcement profile height 56, in the embodiment shown, is approximately 73.0 mm.

In the embodiment shown, the scaffold bar 20 is formed or designed symmetrically to a longitudinal plane of symmetry 65 containing the first longitudinal axis 23 and the second longitudinal axis 43 and symmetrically to a transverse plane of symmetry 67 containing the center longitudinal profile support 27 of the round tube support profile 21. Accordingly, the U-reinforcement profile 22 and, therefore, also the two lateral profile arms 50.1, 50.2, which extend essentially parallel to each other , of the reinforcement profile in U 22, are symmetrically designed or designed to the plane of longitudinal symmetry 65 and also symmetrically to the plane of transverse simetna 67. The two profile arms 50.1, 50.2, designed and arranged symmetrically to the longitudinal plane of symmetry 65, of the U-reinforcement profile 22 of the scaffold bar 20, extend parallel to each other on both sides of the longitudinal plane of symmetry 65 and, therefore, on both sides and a profile arm shaft 51, formed perpendicularly to the second longitudinal axis 43, of the U-shaped reinforcement profile 22.

The two profile arms 50.1, 50.2 of the U-shaped reinforcement profile 22 are arranged with their fastening ends 55.1, 55.2 in each case with respect to the longitudinal plane of symmetry 65 offset laterally at the same distance corresponding to half the distance transverse 52 or half the width of the reinforcement profile at U 52. Therefore, the profile arms 50.1, 50.2 of the U-shaped reinforcement profile 22 are seated and, therefore, the reinforcement profile is seated at U 22 not at the lowest point, in the mounting position 30, of the round tube support profile 21, but displaced on both sides of the central point 40 of the round tube support profile 21 or the longitudinal symmetrical plane 65. Therefore, there results an effective reinforcing profile height 68 which, at a distance or measurement 69, is slightly smaller than the height of reinforcing profile 56 and an effective step height 70 of the corresponding step 60.1, 60.3 is obtained; 60.2, which, in the same distance or measurement 69, is smaller than the corresponding pitch height 63. The effective reinforcement profile height 68 is in this case approximately 71.96 mm. The effective step height 70 is in this case approximately 28.96 mm. Accordingly, the height of effective reinforcing profile 68 is reduced, with respect to the height of reinforcing profile 56, in the distance or measurement 69 of approximately 1.04 mm. Accordingly, the scaffold bar 20 has a total height 71 which corresponds to the sum of the outer diameter 28 of the round tube support profile 21 and the effective height of the reinforcing profile 68. The total height 71 is in this case calculation of approximately 120.26 mm (see figure 4). Also the effective step height 70 is reduced, with respect to the step height 63, in the measure 69 of approximately 1.04 mm.

Preferably, the U-reinforcement profile 22 is manufactured by beveling, bending and / or profiling on a roller road of a steel sheet in the form of a plate or strip, preferably flat, not shown in the figures, or of a semi-finished product. made of sheet steel, around a single bevelling or bending axis.

The scaffold bar 20 according to the invention offers an advantageous possibility for a fixation of already existing accessory components, not shown in the figures, with particularly standardized couplings, preferably integrated, in a longitudinal area of the round tube support profile 21. in which the U-reinforcement profile 22 is also extended and / or for securing at least one scaffold platform 39, in particular already existing, supported or engaged in or on the round tube support profile 21 against a lifting by means of a securing bar, not shown in the figures, disposed on the underside of the or of the corresponding scaffold platform 39, pivotable relative to it about a pivoting axis arranged transversely, in particular perpendicularly, to a surface of the scaffold platform work 39.

In figure 5 there is shown a stacking arrangement 75 of two scaffold bars 20 according to the invention comprising a first scaffold bar 20.1 and a second scaffold bar 20.2. The first scaffold bar 20.1 and the second scaffold bar 20.2 are designed the same. Expressed in other words, the stacking arrangement shows two equal scaffold bars 20.

In the stacking arrangement 75 shown in Figure 5, the second scaffold bar 20.2 is disposed with respect to the first scaffold bar 20.1 rotated by 180 degrees around the first longitudinal axis 23 of the first scaffold bar 20.1 in such a way that , observed in the cross section perpendicularly to the first or second longitudinal axis 23 or 43 of the first scaffold bar 20.1, the ends 76, formed or limited with the corresponding base profile 49 of the corresponding U-shaped reinforcement profile 22, of the profile U-shaped reinforcement 22 point in opposite directions to each other or to the U-reinforcement profile 22 of the first scaffold bar 20.1 from its round tube support profile 21 and the reinforcement profile 22 of the second scaffold bar 20.2 from its round tube support profile 21 point in opposite directions and in opposite direction to each other

The round tube support profile 21 of the second scaffold bar 20.2 is located on or on a profile arm 50.1 of the two profile arms 50.1, 50.2, essentially parallel to each other, of the U-shaped reinforcement profile 22 of the first scaffold bar 20.1 and the U-reinforcement profile 22 of the second scaffold bar 20.2 is located with a profile arm 50.1 of its profile arms 50.1, 50.2, essentially parallel, in or on the support profile of round tube 21 of the first scaffold bar 20.1, such that the profile arm shaft 51 of the U-shaped reinforcement profile 22 of the second scaffold bar 20.2 and the profile arm shaft 51 of the reinforcement profile in U 22 of the first scaffold bar 20.1 run approximately parallel (see figure 5). Such a stacking arrangement 75 saves space particularly or enables a storage that in particular saves space by stacking at least two scaffold bars 20; 20.1, 20.2 according to the invention side by side or one on top of the other. The profile arm shaft 51 of the first scaffold bar 20.1 and the profile arm shaft 51, parallel to it, of the second scaffold bar 20.2 have a stacking distance 77 which is 0.5 or half of the sum of the outer diameter 28 of the corresponding round tube support profile 21 and the reinforcing profile width 52 of the corresponding U-shaped reinforcement profile 22 or of the transverse distance 52 of the corresponding profile arms 50.1, 50.2 of the corresponding profile U-reinforcement 22. In the embodiment shown, the corresponding stacking distance 77 is approximately 34.15 mm.

List of references

20 Scaffolding bar

20.1 (First) scaffolding bar

20.2 (Second) scaffolding bar

21 Round tube / round tube support profile

22 Reinforcement profile in U

23 First longitudinal axis of 21

24 First longitudinal direction

25.1 (First) end of support profile

25.2 (Second) end of support profile

26 Support profile length

27 Longitudinal center of support profile

28 Outside diameter of 21

29 Wall thickness (of support profile)

30 Mounting position

31 Support edge (upper) of 21

32 Connection head

33.1 Step

33.2 Step

34 Fixing element / rosette / perforated disc

35 Cradle connection

36 Scaffolding element / scaffold stem

37 Hook / claw in engagement

39 Scaffolding platform / scaffolding base

40 Center point

43 Second longitudinal axis of 22

44 Second longitudinal direction

45 Reinforcement profile length

46 Distance (110)

47 ^ (First) reinforcement profile end / end

. longitudinal

47.2 End (far) of reinforcement profile / longitudinal end

48 U-shaped cross section

49 Base profile

50.1 (First) profile arm

50.2 (Second) profile arm

51 Profile arm shaft

52 Transverse distance / width of reinforcement profile

53 Interior radio

Transverse section (semicircular) (First) end of fixation of 50.1 (Second) end of fixation of 50.2 Distance / height of profile U

Wall thickness (reinforcement profile) (First) step

(Second step

(Third step

(First) longitudinal distance (Sixth) longitudinal distance (First) longitudinal distance of pitch Step height

Step length

Plane (of longitudinal length) Profile arm height

Plane (of transverse simetna) Effective height of reinforcement profile Distance / quantity

Effective step height

Total height

Stacking disposition

Stacking distance

Claims (15)

1. Metal scaffolding rod with an elongated round tube support profile in the shape of a steel bar (21) and an elongated U-shaped reinforcement profile (22) made of sheet steel, with the following characteristics: the round tube support profile (21) extends in the direction of a first longitudinal axis (23) in a first longitudinal direction (24), has, observed in the first longitudinal direction (24), a length of support profile (26) and a longitudinal center of profile support (27), has an outer diameter (28) essentially constant in its length of support profile (26), has a support edge (31), top observed in a mounting position (30) of the scaffolding bar (20), for the support and / or the attachment of a scaffold platform (39) or several scaffold platforms (39) and it comprises two ends of support profile (25.1, 25.2) pointing in two opposite directions in the first longitudinal direction (24) in the opposite direction between each other; O well at each end of the support profile (25.1, 25.2) of the ends of the support profile (25.1, 25.2) a separate connection head (32) of metal is fixedly welded in each case for the removable fastening of the busbar. scaffolding (20) in the mounting position (30) in a fastening element (34), provided with at least one step (33.1, 33.2), of a scaffolding element (36) by means of a connection cradle (35). ) that can be entered through step (33.1, 33.2) or at each end of the support profile of the ends of the support profile is fixedly welded in each case a catch hook in the form of a metal hook open downwards, observed in each case in the mounting position, for the positioning and / or the detachable hitch of the scaffold bar in the mounting position on and / or on scaffolding components; the reinforcement profile in U (22) extends away from the round tube support profile (21), in the mounting position (30), downwardly of the round tube support profile (21), extends in the direction of a second longitudinal axis (43) in a second longitudinal direction (44) parallel to the round tube support profile (21) and / or parallel to its first longitudinal axis (23) by bridging the longitudinal center of the support profile (27) along the profile of round tube support (21) continuously over a length of reinforcement profile (45) which at least corresponds to half the length of profile support (26) of the profile of round tube support (21), it has two reinforcing profile ends (47.1, 47.2) pointing in two opposite directions in the second longitudinal direction (44) in the opposite direction between each other, it has a U-shaped cross section (48) observed in a cross section running perpendicular to the second longitudinal axis (43), it is designed with a base profile (49) extending in the second longitudinal direction (44), of which two side profile arms (50.1, 50.2) extend in the second longitudinal direction (44) in the same direction. direction, observed in the mounting position (30) upwards, in a transverse distance (52) essentially parallel to each other in the direction of a vertical profile arm axis (51) in the mounting position (30) and present fixing ends (55.1, 55.2) which are fixedly welded to an outer wall of the round tube support profile (21) and has a reinforcing profile width (52) corresponding to the transverse distance (52) and a reinforcement profile height (56) corresponding to the distance (56) between the fastening ends (55.1, 55.2) and the base profile (49) which is greater than the reinforcing profile width (52) and which is larger than the outer diameter (28) of the round tube support profile (21); characterized by the following features : a first profile arm (50.1) of the two lateral profile arms (50.1, 50.2) is provided with a first step (60.1) for fixing and / or securing scaffold components; the first step (60.1) is disposed at a first longitudinal distance (61.1) of a first reinforcing profile end (47.1) of the two reinforcing profile ends (47.1,47.2) of the U-shaped reinforcement profile (22) and a second longitudinal distance of a second reinforcement profile end (47.2) of the two reinforcement profile ends (47.1,47.2) of the U-reinforcement profile (22), presents, observed in the second longitudinal direction (44), a first pitch length (64) and has a first pitch height (63) that is smaller than the height of the reinforcement profile (56); a second profile arm (50.2) of the two lateral profile arms (50.1, 50.2) is provided with a second step (60.2) for fixing and / or securing scaffolding components; the second step (60.2) it is disposed at a third longitudinal distance from the first reinforcing profile end (47.1) of the U-shaped reinforcement profile (22) and is disposed at a fourth longitudinal distance from the second reinforcing profile end (47.2), presents, observed in the second longitudinal direction (44), a second step length (64) and presents a second pitch height (63) which is smaller than the height of the reinforcement profile (56); the transverse distance (52), corresponding to the reinforcing profile width (52) of the U-shaped reinforcement profile (22), of the two lateral profile arms (50.1, 50.2) which extend substantially parallel to each other sf is less than 0.6 times the outer diameter (28) of the round tube support profile (21). Scaffolding bar according to claim 1, characterized in that the transverse distance (52), which corresponds to the reinforcing profile width (52) of the U-shaped reinforcement profile (22), of the two profile arms laterals (50.1, 50.2) extending essentially parallel to each other is less than 0.5 - 0.45 times the outer diameter (28) of the round tube support profile (21). 3. Scaffolding bar according to claim 1 or 2, characterized in that the first step (60.1) of the first profile arm (50.2) and the second step (60.2) of the second profile arm (50.2) are arranged in relation to the reinforcement profile in U (22) essentially at the same height. Scaffolding bar according to one of the preceding claims, characterized in that the first passage (60.1) of the first profile arm (50.1) and the second passage (60.2) of the second profile arm (50.2) are limited by the wall exterior of the round tube support profile (21). 5. Scaffolding bar according to one of the preceding claims, characterized in that the first step (60.1) of the first profile arm (50.1), observed in a visual direction perpendicular to a plane (65) containing the first longitudinal axis ( 23) and the second longitudinal axis (43), or at least partially overlap with the second step (60.2) of the second profile arm (50.2) or essentially aligns with the second step (60.2). Scaffolding bar according to one of the preceding claims, characterized in that the first profile arm (50.1) of the U-shaped reinforcement profile (22) has a first profile arm height in the region of the first passage (60.1). (66) which is greater than half the reinforcement profile height (56) and because the second profile arm (50.2) of the U-reinforcement profile (22) has a second (60.2) in the area of the second step (60.2) profile arm height (66) which is greater than half the height of reinforcement profile (56). Scaffolding bar according to one of the preceding claims, characterized in that the first step height (63) of the first step (60.1) of the first profile arm (50.1) and the second step height (63) of the second step (60.2) of the second profile arm (50.2) is smaller in each case than half of the reinforcement profile height (56). Scaffolding bar according to one of the preceding claims, characterized in that the first profile arm height (66) of the first profile arm (50.1) of the U-shaped reinforcement profile (22) is greater than 1.0 or 1.2 or 1.4 times the first step height (63) of the first step (60.1) of the first profile arm (50.1) and / or because the second profile arm height (66) of the second arm of profile (50.2) of the U-shaped reinforcement profile (22) is greater than 1.0 or 1.2 or 1.4 times the second step height (63) of the second step (60.2) of the second profile arm ( 50.2). 9. Scaffolding bar according to one of the preceding claims, characterized by the following additional features: the first profile arm (50.1) of the U-shaped reinforcement profile (22) is provided with at least one third step (60.3) for the fixation and / or securing of scaffolding components, the third step (60.3), observed in the second longitudinal direction (44), is disposed at a first longitudinal distance of passage (62.1) of the first step (60.1), it is disposed at a fifth longitudinal distance of the first end of reinforcing profile (47.1) and is disposed at a sixth longitudinal distance (61.6) of the second end of reinforcing profile (47.2), it has, observed in the second longitudinal direction (44) , a third step length and has a third step height (63) that is smaller than the height of the reinforcement profile (56); the second profile arm (50.2) of the U-shaped reinforcement profile (22) is provided with at least a fourth step for securing and / or securing scaffold components; the fourth step, observed in the second longitudinal direction (44), is disposed at a second longitudinal distance of passage of the second step (60.2), is arranged at a seventh longitudinal distance of the first reinforcing profile end (47.1) of the U-shaped reinforcement profile (22) and is disposed at an eighth longitudinal distance from the second profile end of reinforcement (47.2) of the reinforcement profile in U (22), presents, observed in the second longitudinal direction (44), a fourth step length and it has a fourth pitch height (63) which is smaller than the reinforcement profile height (56). Scaffolding bar according to one of the preceding claims, characterized in that each step (60.1, 60.2, 60.3), observed in the second longitudinal direction (44), is designed to be elongated or elongated and / or is rectangularly designed. Scaffolding bar according to one of the preceding claims, characterized in that the two lateral profile arms (50.1, 50.2), essentially extending parallel to each other, of the U-shaped reinforcement profile (22) are arranged symmetrically to a plane of longitudinal simetna (65) containing the first longitudinal axis (23) and the second longitudinal axis (43). Scaffolding bar according to one of the preceding claims, characterized in that the U-shaped reinforcement profile (22) is configured symmetrically to one or the longitudinal plane of symmetry (65) containing the first longitudinal axis (23) and the second longitudinal axis (43). Scaffolding bar according to one of the preceding claims, characterized in that the U-shaped reinforcement profile (22) is manufactured by beveling, bending and / or profiling on a roller path of a plate-shaped steel sheet or of band and / or because the base profile (49) of the U-shaped reinforcement profile (22) is bulged outwardly away from the round tube support profile (21) and, observed in a transverse section perpendicular to the second longitudinal axis ( 43), has a semicircular cross section (54). 14. Stacking arrangement of at least two scaffold bars comprising a first scaffold bar (20; 20.1) according to one of the preceding claims and at least one second scaffold bar (20; 20.1) according to one of the the above claims, the round tube support profile (21) of the second scaffold bar (20.2) being supported on or on a profile arm (50.1) of the two profile arms (50.1, 50.2) essentially parallel to each other. U-reinforcement profile (22) of the first scaffold bar (20.1), and supporting the U-reinforcement profile (22) of the second scaffold bar (20.2) with a profile arm (50.1) of its two arms of profile (50.1, 50.2) essentially parallel in or on the round tube support profile (21) of the first scaffold bar (20.1). 15. The stacking arrangement according to claim 14, characterized in that the first scaffold bar (20; 20.1) and the second scaffold bar (20; 20.1) are designed in the same manner.